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Investigation and modelling of pump saturation effect on thermal load of Yb:YAG thin disk pumped at various wavelengths
Author(s): P. Severová; M. Chyla; J. Mužík; M. Smrž; T. Miura; M. Kawasaki; T. Higashiguchi; A. Endo; T. Mocek
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Paper Abstract

Relations among absorption of pump beam, quantum defect and thermal load were investigated for pump wavelengths of 968 nm and near 940 nm in two independent, real-time measurement experiments complemented with thermal distribution simulation. Saturation of absorption at 969 nm pumping for non-lasing operational regime, which affects temperature rise and exists independently of the thin disk type, disk head construction, pump power and pump beam diameter is reported. Disk temperature dependence of absorption, quantum defect and disk geometry and large difference between absorption, disk temperature and o-o efficiency at both pump wavelengths are discussed.

Paper Details

Date Published: 11 May 2017
PDF: 7 pages
Proc. SPIE 10238, High-Power, High-Energy, and High-Intensity Laser Technology III, 102380P (11 May 2017); doi: 10.1117/12.2265822
Show Author Affiliations
P. Severová, HiLASE Ctr. (Czech Republic)
Czech Technical Univ. in Prague (Czech Republic)
M. Chyla, HiLASE Ctr. (Czech Republic)
J. Mužík, HiLASE Ctr. (Czech Republic)
Czech Technical Univ. in Prague (Czech Republic)
M. Smrž, HiLASE Ctr. (Czech Republic)
T. Miura, HiLASE Ctr. (Czech Republic)
M. Kawasaki, Utsunomiya Univ. (Japan)
T. Higashiguchi, Utsunomiya Univ. (Japan)
A. Endo, HiLASE Ctr. (Czech Republic)
T. Mocek, HiLASE Ctr. (Czech Republic)


Published in SPIE Proceedings Vol. 10238:
High-Power, High-Energy, and High-Intensity Laser Technology III
Joachim Hein, Editor(s)

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